Description of plywood grade BB/CP:
Grade ВВ – is intended for processing paints and semi-transparent materials, for covering with sliced veneer of valuable species. In the BB grade, it is allowed to fix inserts from veneer, which improves the quality of the sheet surface. Healthy light bitches are allowed. Healthy dark knots are allowed no larger than 20 mm. Apertures from the dropped out knots allowed by size not more than 6 mm. Closed cracks can be 200 mm long, open cracks can be up to 2 mm wide. Healthy color change, false core should not exceed 25% of the leaf surface. Open knots and defects are cut out and before gluing the veneer are sealed with small oval patches of veneer, the veneer for which is selected according to the color of the face veneer. This variety is widely used in the production of furniture and for decorative finishing (covered with various finishing materials, lacquers, paints)
Grade СР – used for facing with non-transparent and film coatings, for processing with paints. Knots with a diameter of no more than are allowed 6 mm in the amount of 10 PCs. per 1 m2 of the sheet surface. The surface is made of solid veneer, the quality of this grade is very close to the BB grade. Healthy light knots are allowed. Healthy dark knots are allowed with a crack no more than 1.5 mm wide. Ungrown knots and holes from ungrown knots are allowed no more than 6 mm in size. Closed and open cracks are also allowed. In the CP variety, the false core should not exceed 50% of the leaf surface, and the healthy color change should not exceed 50%. Repair of veneer inserts in the CP class is not limited. Double inserts are also allowed. The veneer of CP grade can consist of strips of veneer glued together on edge.
